The company was founded in 1973 as Computer Support Services by Ronald P. Lewis to provide companies with data processing services. Computer Support Services, also known as RPL & Co. At that time, it was incorporated in 1978. In 1980, the company established itself as a service-oriented company under new owners, Delmar R. Ritter and David L. Cornelius. With sales reaching $2.4 million, the company added a third owner, Thomas A. Erickson, in 1989. The company acquired Quality Data Products of
Williamsport, Pennsylvania, from David Franklin, in 1993. In 2011, CSSI opened a subsidiary, CSSI Global Technologies. In 2018, the company announced the change of the company's name to CSSI Technologies, and the divestment of its Core Integrator software business, which is independently operated as
CoreIntegrator, LLC. ==Current executives==